Hydrant



No. 6|s,|69.

(No Model.)

@willi/10m co Q 2 ,uz mms Persns co. :wom uw WA mue oN n EDVRD F. DUFFY, OF HARTFORD, CONNECTICUT.

HYDRANT.

SPECIFICATION forming part of Letters Patent No. 618,169, dated January 2li,A 1899.

Application filed June 22, 1898. Serial No. 684,131. (No model.)

To all whom, t mayconcrn:

Be it known that I, EDWARD l?. DUFFY, a citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a certain new and useful Improvement in Hydrants, of which the following is a description, reference being had to the accompanying drawings, wherein- Figure 1 is a view in central vertical longitudinal section with the main valve of the hydrant closed.A Fig. 2 is a view in horizontal cross-section on the plane denoted by the dotted line fc r appurtenant to Fig. l.

The improvements herein described and claimed appertain to hydrants.

In the accompanying drawings the letters a., b, and c, respectively, denote sections of the hydrant-case, which is made up of these parts collectively. Through the lower section c there is an inlet-orifice d for admitting water to the hydrant from the street-main. The letter c denotes the valve appurtenant to that inlet-orice. Its face or front is on an incline, and the valve-seat f is correspondingly inclined. The rear side of the valve e is also inclined, so that the valve as a whole is wedgeshaped. The letter g denotes a shoe correspondin gly inclined upon its face, and thereby adapted to cooperate with the rear side of the valve.

The letter 7L denotes the valve-rod, by which expression is meant the rod bywhich the valve is operated. Near its lower part it has two diierent screw-threads, one of them running in one direction and the other running in an opposite direction. The lower of these two screw-threads upon the valve takes into and through valve e. The upper of these two screw-threads takes into andthrough the lateral part of the shoe g. Obviously it results from this construction that the valve e and shoe g are both supported by and on the valverod 77,. It is by rotation of this valve-rod that the valve e is moved to close and nnclose the inlet-orifice d. By reason of the wedge shape of the valve c and the corresponding inclines of the valve-seat f and the shoeg, the valve is pressed the more snugly to its seat the farther it is moved upward. By having the Valve and the shoe hung upon the two different screw-threads, this closing action of the valve is accelerated.

The valve-rod is adapted to be operated by a wrench at the top of the hydrant-case. Near the top of the hydrant-case the valverod is held from longitudinal motion, but permitted to rotate.

The hydrant is provided with a drip-Valve which is closed bya spring of suicent force whenever the main valve of the hydrant is open, but which is opened in order to empty the hydrant-case of water whenever the main valve is closed. The letter t' denotes this dripvalve borne on the pintle 7o and pressed to its seat normally by the spring Z. NVhen the main valve of the hydrant eis closed, the shoe g bears against the valve-pintle lo', holding the drip-valve open and permitting the water which would otherwise be confined within the hydrant-case to escape but when the main Valve e of the hydrant is open the shoe g fails to press upon the valve-pintle 7c, with the result that at such times the drip-valve remains shut.

I claim as my improvement In combination, the hydrant-case, the inletorifice, the wedge-shaped Valve, the inclined valve-seat, the shoe at the rear of the valve with inclined face, and the screw-rod taking on it the valve by a screw-thread running in one direction, and also taking said shoe upon it by a screw-thread running in the opposite direction, all substantially as described and for the purposes set forth.

EDWARD F. DUFFY.

lVitnesses:

W. E. SIMoNDs, ANITA Looms. 

